Motor-controller.



M. M. GOLDENSTEIN. MOTOR CONTROLLER. APPLICATION man JULY 3. 1916.

Patented Oct. 15, 1913 I V V INVENTOR. g mmMaoumszm A TTORNE Y control means to effect coupling of the\con- UNITED STATES PATENT OFFICE.

MAURICE M. GOLDENSTEIN, OF MILWAU KEE, WISCONSIN, ASSIGNOR TO THE CUTLER- HAMMER MFG. 00., OF MILWAUKEE, WISCONSIN, A CORPORATION OF WISCONSIN.

MOTOR-CONTROLLER.

Specification of Letters Patent.

Application filed July 8, 1916. Serial No. 107,228.

ing at Milwaukee, in the county of Milwau-' kee and State of Wisconsin, have invented new and useful Improvements in Motor- Controllers, of which the following is a full,

clear, concise, and exact description, reference being had to the accompanying drawing, forming a part of this specification.

This invention relates to improvements in motor controllers and is particularly applicable to printing press controllers.

y In practice, as in printing press control, it is frequently desired to couple together two or more motor driven units and to couple together their respective controllers for joint operation, and this invention has among its objects to provide means necessitating both coupling operations before either driven unit can be started, that is to say after coupling of either the units or their controllers.

A further object is to necessitate the closure of the line switches of all connected controllers prior to starting of the coupled units.

A still further object isto provide remote trollers andto necessitate predetermined p0 sitioning of said controllers prior to coupling thereof. p

.Other objects and advantages of the invention will hereinafter appear.

The accompanying drawing illustrates diagrammatically one embodiment of the invention which will now be described, it being understood that the invention is susceptible of embodiment in other forms falling within the scope of the appended claims.

Referring to the drawing, the same illustrates schei'natically two printing press units 1 and 2 provided with motor driving sets M and M respectively, each including a large motor L and a small motor S. The motor sets are illustrated as driving their respective press units through shafts 3 and 4 and said'shat'ts are illustrated as provided with a coupling 5 operable by a hand lever 6 to effect connection of said driving sets for joint operation of the press units.

The motor sets M and M are provided with separate controllers C and C respectively which in practice may be of any preferred type. The controllers illustrated are of the type shown in my prior Patent No. 1,17 6,542, issued March 21, 1916, but having various elements thereof omitted for simplifying the present disclosure. As illustrated, each controller includes a solenoid operated rheostat 7 of the cross head type Patented Oct. 15, 1918.

to control its respective motor set in the well known manner, fully set forth in said prior patent. The rheostat cross head descends by gravity to eifect operation of its motor set and is adapted to be raised by its operating solenoid for slow down and stopping. The plunger 8 of the solenoid is notched and has a coiiperating latching pawl 10 to hold it and accordingly the cross head, in the selected position, said pawl being operable by an electromagnetic relay 11 to effect release of the cross head. The relay 11 is commonly known asthe on,relay and is adapted to be energized by a normally open push button switch 12. Each controller also includes an electromagnetic relay 13 commonly known as the safe'relay, which is normally closed and included, in circuit with the winding of switch 11. When energized this safe relay opens tointerrupt ,the circuit of on relay 11 to thereby insure against further operation of. the latching pawl 10. The safe relay is controllable by a push button switch 14 adapted to stand in either open or closed position. As will be understood, other relays and control switches would in practice be provided to effect energization of the rheostat solenoids and it is to beunderstood that when. the controllers are coupled together as hereinafter specified 1 is desired to mechanically couple the rheostats? and for this purpose each rheostat is provided with a pinion 15 meshing with teeth provided on its solenoid plunger 8. These pinions are connected by shafts 16 to pinions 17 arranged in close proximity for engagement by a common gear 18, said gear being arranged to be thrown into and out of engagement with said pinions. lVith the gear 18 disengaged from pinions 17, the latter, and in consequence the rheostats, are free for independent movement. On the other hand, by throwing the gear 18 into mesh with the pinions 17 the latter may be locked together to thereby couple the rheostats for joint operation thereof. In practice the gear 18 may be either manually or automatically operated and it is to be understood that any other preferred coupling may be substituted therefor.

In the present instance the controller coupling is provided with an operating solenoid 20 and the same solenoid is also employed for operating two switches 21 and 22. The switch 21 is arranged to be closed upon coupling of the controllers and when closed to establish an equalizing circuit for the two control rheostats. The switch 22, which is of the spider type, is provided to control certain circuits hereinafter specified and may be provided with additional contacts to commutate the push button stations of the two controllers as well as overload and paper break switches in the manner set forth in said prior patent.

The solenoid 20 thus provides for remote control of the controller coupling together with the switches mentioned and the press coupling is provided with a spider type switch 23 to energize and denergize said solenoid upon coupling and uncoupling of the press units. Thus a single manual operation serves to effect coupling of both the press units and the controllers, which elements are usually arranged at a considerable distance from one another. Also, the rheostats are provided with auxiliary switches 7' included in the initial energizing circuit of the solenoid 20, said switches being biased to open position to interrupt said circuit and being adapted to be closed by their respective rheostat cross heads but only in the initial or off position of the latter. Thus as will be apparent the auxiliary switches 7 necessitate predetermined positioning of the rheostats prior to energization of solenoid 20 and hence prior to coupling of said rheostata and press units.

The switch 22 is adapted when actuated to establish a maintaining circuit for solenoid 20 independent of the auxiliary switches 7 and the two switches 22 and 23 cooperate to complete the circuits of the safe relays of the two controllers if for any reason solenoid 20 fails to respond to couple thecontrollers upon the coupling of the press units. Still further, the switches 22 and 23 co6perate to complete the circuits of the safe relays of both controllers if the controllers are coupled without coupling of the press units, whichprovision is made more particularly for controllers requiring manual operation of the controller coupling and the associated switches. As above set forth, energization of the safe relays renders both controllers inoperative for starting purposes and in consequence it will be apparent that the switches 22 and 23 insure against starting of either motor set without full coupling operation following the coupling of either the press units or the controllers.

The two controllers C and C are further provided with independent double pole knife switches L, L controlling their line connections and the solenoid 20 is connected between the left hand pole of switch L and the left hand pole of switch L. Moreover the on relays are also dependent for energization upon the closure of their respective knife switches and as will be. apparent the coupling of the controllers renders each latching pawl effective as to both controllers. Thus with the solenoid operated coupling illustrated the opening of either knife switch prevents the coupling of the controllers whereas with a manual coupling the opening of either knife switch would prevent the energization of one of the on relays and hence prevent release of either rheostat.

More specifically describing the diagram illustrated the windings of the two controllers are connected across parallel branches of supply lines 25 and 26, the continuity of such branches being controlled by the knife switches L, L. The circuit of the on relay 11 of controller C extends from line 25 through knife switch L, by conductor 27 through push button switch 12, by conductor 28 through the winding of said relay, by conductor 29 through safe relay 13, .by conductor 30 to and through knife switch L to line 26. The circuit of the on relay 11 of controller C extends from line 25 through knife switch L, by conductor 31 through push button switch 12, by conductor through winding of said relay, by conductor 33 through safe relay 13, by conductor -3lto and through knife switch L to line 26. The circuit of the safe relay 13 of controller C extends from line 25 through knife switch L, by conductors 27 and 35 through switch 14, by conductor 36 through the winding of said relay, by conductor 30 to and through knife switch L to line 26. The circuit of safe relay 13 of controller C extends from line 25 through knife switch L by conductors 31 and 37 to and through push button switch 14, by conductor 38 through the winding of said relay, by conductor 34 to and through knife switch L to line 26. WVith the control stations paralleled as indicated by dotted lines the push button switches of controller C would connect their respective relays of controller C as already described, whereas they would connect their respective relays of controller C ,between the left hand pole, of knife switch L and the left hand pole of knife switch L. On the other hand, the push button switches of controller C would connect their respective relays of said controller as already described, while they would connect their respective relays of controller C between the "right hand pole of knife switch L and the right hand pole of switch L, with the results above de scribed.

The circuit of solenoid 20 is controlled by contacts 39, 40 and 41 of switch 23. With the presses uncoupled these contacts interrupt the circuit'of said solenoid whereas upon coupling of the presses contact 41 bridges contacts 39 and 40 to complete said circuit. This circuit extends from-line 25 through the left hand pole of knife switch L, by conductors 27, 35 and 42 'to and through said contacts 39, 41 and 40 by conductor 43 through solenoid 20, by conductor 44 through auxiliary switch 7 of the left hand rheostat, by conductor 45 through the auxiliary switch 7 of the right hand rheostat, by conductors 46 and 34 to and through the left hand pole of switch L to line 26.

The maintaining circuit of solenoid 20 is controlled by contacts 47, 48 and 49 of switch 22. With the controllers uncoupled these contacts i terrupt said maintaining circuit whereas lilion response of solenoid 20 to couple the controllers contact 49 bridges contacts 47 and 48 to complete said circuit from conductor 44 by conductor 50 to and through said contacts, by conductor 51 to conductor 46. This circuit, as will be apparent, shunts the auxiliary switches 7 of both rheostats and thereby provides for maintaining solenoidf20 energized upon de-' scent of the rheostat cross head and consequent release of said auxiliar switches. 3

The safe relay circuit 0 controller C is jointly controlled by contacts 52', 53, 54,

and 55 of switch 22 and contacts 561, 57, 58 and 59 of switch 23. Contacts 53 and 57 are respectively connected by conductors 60 -42 and 61 to opposite sides of the push button switch '14 of controller C and contacts 52 and 54 of switch 22 are cross connected with contacts 56 and 58 of switch 23.

' With both the press units and the controllers uncoupled the contact 55 of switch 22 bridges contacts 53 and 54 while contact 59 of switch 23 bridges contacts 56 and 57 and under such conditions circuit is interrupted between said switches. When, however, the

presses are coupled together contact 59 of switch 23 is disengaged from contact 56 and caused to bridge contacts 57 and 58.

In consequence if the'switch 22 fails to respond circuit is at once completed from the left hand side of switch 14 of controllerC by conductors 42 and 60 to and through contacts 53, 55 and 54 of switch 22 and thence to and through contacts 58, 59 and 57 of switch 23, by conductor 61 to the right hand side of switch 14. The establishment of this circuit obviously has the same effect as closure of switch 14 or, in other words, effects. energization of the safe relay 13 of controller C which as stated, renders said controller inoperative for starting. On the other hand, should the controllers be manually coupled without coupling of the press units, contact 55 ofswitch 22 would be disengaged from contact 54 and caused to bridge contacts 52 and 53, which would complete the same circuit'as that just described, using contact 52 of switch 22 and contact 56 of switch 23 as the bridge instead of contacts 54 and 58 and with the same result. Finally when both switches are operated they assume their initial relation and thereby interrupt the shunt around switch 14.

The safe relay,13 of controller C is conwith the same effect.

The equalizing connection for the two controllers, which as stated above, is controlled by switch 21, extends from the right hand side of rheostat 7 of controller C, by conductor 70 through said switch 21, by conductor 71 to the right hand side of rheostat 7 of controller C. c

What I claim as new and desire to secure by Letters Patent is:

1. In combination, a plurality of motor driven devices, separate controllers therefor, separate means for coupling said devices for joint operation thereof and coupling said controllers for joint control of said devices and means rendering said controllers ineffec tive upon operation of one of said coupling means without operation of the other.

2. In combination, a plurality of motor driven devices, separate controllers therefor, separate means for coupling said devices for joint operation thereof and coupling said controllers for joint control of said devices and means rendering said controllers ineffective upon operation of either of said coupling means without operation of the other.

3. In combination, a plurality of motor driven devices, separate controllers therefor, separate means for coupling said devices for joint operation thereof and coupling said controllers, for joint control of said devices and cocperating devices, 'operable individually with said coupling means, to insure against operation of said driven devices upon operation of one of said coupling means without operation of the other.

4. In combination, a plurality of motor driven devices, separate controllers therefor, separate means for coupling said devices for joint operation thereof and coupling said controllers for joint control of said devices and cooperating devices, operable individually with said coupling means, to insure against operation of said driven devices upon operation of either of said coupling means without operation of the other.

5. In combination, a plurality of motor driven units, separate controllers therefor, separate coupling devices for said driven units and said controllers and cooperating means associated with and controlled by said coupling devices to render said controllers individually inoperative under predetermined conditions.

6. In combination, a plurality of motor driven units, separate controllers therefor, each of said controllers including a device to prevent operation thereof, separate -coupling means for said driven units and said controllers and means to render said preventive devices effective upon operation of one of said coupling means without operation of the other.

7. In combination, a plurality of motor driven units, separate controllers therefor, each of said controllers including a device to prevent operation thereof, separate coupling means for said driven units and said controllers and cooperatingmeans, operable individually by said couplin means, to render said preventive devices effective upon coupling of said driven units without coupling of said controllers and upon coupling of the latter without coupling of the former.

8. In combination, a plurality of separately operable controllers and means for coupling said controllers, said means necessitating predetermined positioning of each of said controllers prior to coupling thereof.

9. In combination, a plurality of separately operable. controllers, power operated means for coupling said controllers for joint operation thereof and means controlling said coupling means to necessitate predetermined positioning of parts of said controllers prior to coupling thereof.

10. In combination, a plurality of separately operable controllers, coupling means therefor to insure synchronous operation thereof and means to elfect automatic operation of said coupling means but only under given conditions including predetermined positioning of each of said controllers.

11. In combination, a plurality of separately operable controllers, electromagnetically controlled coupling means therefor,

and circuit controlling means for said coupling means associated with and operable by said controllers to necessitate predetermined positioning of the latter for coupling operation.

12. In combination, a plurality of motor driven units, separate controllers therefor, electromagnetically operated coupling means 'for said controllers, jointly operable means for coupling said driven units and controlling the former coupling means and means controlling said former coupling means to necessitate predetermined positioning of parts of said controllers prior to coupling thereof.

13. In combination, a plurality of motor driven units, separate controllers therefor. electromagnetically operated coupling means for said controllers having control switches governed by said controllers to necessitate predetermined positioning of parts of the latter prior to coupling operation, jointly operable means for coupling said driven units and controlling the former cOupling means. and means associated with said former coupling means to establish a maintaining circuit therefor independent of said switches.

l-l. In combination, a plurality of motor driven units. separate controllers therefor, electromagueticall v operated coupling means for said controllers having control switches governed by said controllers to necessitate predetermined positioning of parts of the latter prior to coupling operation, jointly operable means for coupling said driven units and controlling the former coupling means, and means operable by said former coupling means to establish equalizing connections for said controllers.

15. In combination, a plurality of motor driven 'units, separate controllers therefor, electromagnetically operable coupling means for said controllers having control switches governed by said controllers to necessitate predetermined positioning of parts of the latter prior to coupling operation, jointly operable means for coupling said driven units and controllingthe former coupling means and means associated with and operable by said coupling means to insure against startin operation of said controllers after operation of one of said coupling means without operation of the other.

16. In combination, a plurality of electroresponsive controllers, separately operable switches controlling independent line connections for said controllers, and electro-responsive means for coupling said controllers, said means being dependent for energization upon the closure of said switches of the coupled controllers.

17. In combination, a plurality of electroresponsive controllers. separately operable switches controlling independent line connections for said controllers, and means for In witness whereof I have hereunto submechanically coupling parts of said controlscribed my name.

lers for joint operatlon thereof, said ,con- MAURICE M. GOLDENSTEIN. trollers when coupled being dependent for Witnesses: 5 startlng operation upon closure of said line F. S. WILHOrr,

switch of each. i WASHBURN, Jr. 

